Prerna

• Username: 2★prerna_2727
• Country:  India
• Student/Professional:Student
• Institution:Motilal Nehru National Institute of Technology Allahabad Uttar Pradesh, India
• CodeChef Pro Plan: No Active Plan. View Details

Submissions Heat Map

Last 6 Months 2026 (Jan-Jun)2025 (Jul-Dec)2025 (Jan-Jun)

Rating Graph

No. of Contests Participated: 10

Current Ratings Graph Old Ratings Graph

1535 (+42)RatingProvisional
Rating i Provisional Rating, click to know more

March Challenge 2021 Division 3(2021-03-15 15:00:04)

Global Rank:   1966

Cheated in:   

Ratings System Update

(2021-03-15 15:00:04)

This is the difference due to changing the rating system.This graph is not updated after 20th Dec 2022. Know more

How the rating system works?

1535 (-90)RatingProvisional
Rating i Provisional Rating, click to know more

March Challenge 2021 Division 3(2022-12-20 00:00:00)

Global Rank:   1966

Cheated in:   

Ratings System Update

(2022-12-20 00:00:00)

This is the difference due to changing the rating system.This graph is not updated after 20th Dec 2022. Know more

How the rating system works?

Learning Paths (0)

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Practice Paths (0)

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Contests (10)

December Challenge 2019 Division 2

That Is My Score!, Plus Multiply

December Cook-Off 2019 Division 2

Change It

January Challenge 2020 Division 2

Chef and Dynamo, Doraemon, Breaking Bricks

May Challenge 2020 Division 2

Coronavirus Spread, Isolation Centers

June Challenge 2020 Division 2

Even Matrix, The Tom and Jerry Game!, Chef and Icecream, Chef and String, Chef and Price Control

August Challenge 2020 Division 2

Chef and Linear Chess, Smallest KMP, Another Card Game Problem, Chef Wars - Return of the Jedi

September Challenge 2020 Division 2

A Problem on Sticks, Ada Matrix

October Challenge 2020 Division 2

Positive AND, Covid Run, Chef and Easy Queries

February Challenge 2021 Division 3

Frog Sort, Chef and Meetings, Maximise Function, Highest Divisor

March Challenge 2021 Division 3

Interesting XOR!, Chef and Groups, Paparazzi Gennady, Space Arrays, No Time to Wait

Total Problems Solved: 32